/**
 * ***************************************************************************** Copyright (c) 2005,
 * 2006 Subclipse project and others. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies
 * this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * <p>Contributors: Subclipse project committers - initial API and implementation
 * ****************************************************************************
 */
package org.tigris.subversion.subclipse.core.commands;

import java.util.LinkedHashSet;
import java.util.Set;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.tigris.subversion.subclipse.core.SVNException;
import org.tigris.subversion.subclipse.core.client.OperationManager;
import org.tigris.subversion.subclipse.core.resources.SVNWorkspaceRoot;
import org.tigris.subversion.svnclientadapter.ISVNClientAdapter;
import org.tigris.subversion.svnclientadapter.SVNClientException;

/**
 * Remove stale transactions and locks from the working copy. This operation can only be run on
 * folders.
 */
public class CleanupResourcesCommand implements ISVNCommand {

  private final SVNWorkspaceRoot root;
  private final IResource[] resources;
  private Set<IResource> cleanedUpResources = new LinkedHashSet<IResource>();

  public CleanupResourcesCommand(SVNWorkspaceRoot root, IResource[] resources) {
    this.root = root;
    this.resources = resources;
  }

  /* (non-Javadoc)
   * @see org.tigris.subversion.subclipse.core.commands.ISVNCommand#run(org.eclipse.core.runtime.IProgressMonitor)
   */
  public void run(IProgressMonitor monitor) throws SVNException {
    ISVNClientAdapter svnClient = root.getRepository().getSVNClient();
    try {
      monitor.beginTask(null, 100 * resources.length);
      OperationManager.getInstance().beginOperation(svnClient);
      for (int i = 0; i < resources.length; i++) {
        if (resources[i].getLocation() != null) {
          svnClient.cleanup(resources[i].getLocation().toFile());
          cleanedUpResources.add(resources[i]);
        }
        monitor.worked(100);
      }
    } catch (SVNClientException e) {
      throw SVNException.wrapException(e);
    } finally {
      Set<IResource> refreshResources = new LinkedHashSet<IResource>();
      for (IResource resource : cleanedUpResources) {
        addToRefreshList(refreshResources, resource);
      }
      OperationManager.getInstance().endOperation(true, refreshResources);
      root.getRepository().returnSVNClient(svnClient);
      monitor.done();
    }
  }

  private void addToRefreshList(Set<IResource> refreshResources, IResource resource) {
    refreshResources.add(resource);
    OperationManager.getInstance().onNotify(resource.getLocation().toFile(), null);
    if (resource instanceof IContainer) {
      try {
        IResource[] children = ((IContainer) resource).members();
        for (IResource child : children) {
          if (child instanceof IContainer && child.getLocation() != null) {
            addToRefreshList(refreshResources, child);
          }
        }
      } catch (CoreException e) {
      }
    }
  }
}
